Mike Sullivan wrote: >> There was another interesting question in that mail: is "-O1" flag >> something different from just combination of "-fsomething" flags? > > This really is the question I'm interested in. The problem itself was > fixed, I just don't understand why applying the same optimizations > (and more) which make up -O1 don't elicit the same behavior. This is frequently asked on this list, and the answer is always the same: yes, the -O<N> flag does more than just enable a series of -f<foo> flags. Said another way, there are optimizations that do *not* have -f<foo> flags that control them, they are enabled by directly checking the value supplied to the -O flag, and they cannot be directly controlled. -- Kevin P. Fleming Digium, Inc. | Director of Software Technologies 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA skype: kpfleming | jabber: kpfleming@xxxxxxxxxx Check us out at www.digium.com & www.asterisk.org